This application features an ultra realistic looking LED dot matrix screen capable of displaying scrolling messages and animations in 16 vibrant colors.
Show messages in mirrored format for people to read in their rear view mirror.
Play built in animations or your own creations.

This actually looks rather cool. I can see where it could come in handy and be a bit of fun too

Imagine you're organizing a tech party for a few guests, and before they approach the entrance to your house, they see a message from the BlackBerry PlayBook that informs them, "Have you brought your BlackBerry (device) & PlayBook tonight...let's have some fun!"